There is a variety called Peche Blanche, as in white Peach and several links to it can be found by Googling and here's one of them; just scroll down to the bottom for the name:
http://www.labourdaisiere.com/en/the...tory-of-tomato
And it's also listed in the SSE Yearbook as Peche blanche and the most recent description of it is as follows:
80 days, indet,regular leaf, 2 oz, round/square white fruit with yellow tint, lots of seeds, fuzzy thin skin, sweet excellent flavor, very productive ( and the seed source was an SSE member in Belgium)